BERTFAI, Imre. An illustration of harmonic regression based on the results of the fast Fourier transformation. Yugoslav Journal of Operations Research, [S. l.], v. 12, n. 2, p. 185–202, 2002. DOI: 10.2298/YJOR0202185B. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/74. Acesso em: 28 oct. 2025.